McNamara Dean J, Gabbett Tim J, Blanch Peter, Kelly Luke
Int J Sports Physiol Perform. 2018 Feb 1;13(2):135-139. doi: 10.1123/ijspp.2016-0540. Epub 2018 Feb 13.
To date, the monitoring of fast-bowling workloads across training and competition environments has been limited to counting total balls bowled. However, bowling at faster velocities is likely to require greater effort while also placing greater load on the bowler. This study investigated the relationship between prescribed effort and microtechnology outputs in fast bowlers to ascertain whether the technology could provide a more refined measure of workload. Twelve high-performing fast bowlers (mean ± SD age 20.3 ± 2.2 y) participated in the study. Each bowler bowled 6 balls at prescribed bowling intensities of 60%, 70%, 85%, and 100%. The relationships between microtechnology outputs, prescribed intensity, and ball velocity were determined using polynomial regression. Very large relationships were observed between prescribed effort and ball velocity for peak PlayerLoad™ (R = .83 ± .19 and .82 ± .20). The PlayerLoad across lower ranges of prescribed effort exhibited a higher coefficient of variation (CV) (60% = 19.0% [17.0-23.0%]), while the CV at higher ranges of prescribed effort was lower (100% = 7.3% [6.4-8.5%]). Routinely used wearable microtechnology devices offer opportunities to examine workload and intensity in cricket fast bowlers outside the normal metrics reported. They offer a useful tool for prescribing and monitoring bowling intensity and workload in elite fast bowlers.
迄今为止，在训练和比赛环境中对快速投球工作量的监测仅限于计算投球总数。然而，以更快的速度投球可能需要更大的力气，同时也会给投球者带来更大的负荷。本研究调查了快速投球手规定用力与微技术输出之间的关系，以确定该技术是否能提供更精确的工作量衡量标准。12名高水平快速投球手（平均年龄±标准差20.3±2.2岁）参与了这项研究。每位投球手在60%、70%、85%和100%的规定投球强度下投6个球。使用多项式回归确定微技术输出、规定强度和球速之间的关系。对于峰值PlayerLoad™，观察到规定用力与球速之间存在非常大的相关性（R = 0.83±0.19和0.82±0.20）。在规定用力较低范围内的PlayerLoad表现出较高的变异系数（CV）（60% = 19.0% [17.0 - 23.0%]），而在规定用力较高范围内的CV较低（100% = 7.3% [6.4 - 8.5%]）。常规使用的可穿戴微技术设备为研究板球快速投球手在正常报告指标之外的工作量和强度提供了机会。它们为规定和监测精英快速投球手的投球强度和工作量提供了一个有用的工具。
